Unity Transport, write and read in parallel from the NetworkDriver

Unity Engine
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1

(Using the Unity Transport package version 2.3.0)

Hi,

I am trying to write & read in parallel from a NetworkDriver using two IJobParallelForDefer jobs. One for reading new messages and one for writing new messages.

I schedule my jobs like so:

// Update the driver
m_BaseJobHandle = m_NetworkDriver.ScheduleUpdate();
// Update peers list
m_BaseJobHandle = connectionJob.Schedule(m_BaseJobHandle);

// Receive incoming messages
m_ReceiveJobHandle = serverReceiveJob.Schedule(m_ActivePeerLocalIds, 1, m_BaseJobHandle);

// Send outgoing messages
m_SendJobHandle = serverSendJob.Schedule(m_ActivePeerLocalIds, 1, m_BaseJobHandle);

Notice how the driver update and the peers update make the “base” handle, which is necessary for both receiving & sending messages, but then receiving and sending is done in parallel because they don’t share anything with each others, other than the peer list.

Still, when I schedule the jobs, I am spammed with errors from Unity:

InvalidOperationException: The previously scheduled job ServerNetworkConnection:ServerSendJob writes to the Unity.Collections.NativeArray`1[System.Int32] ServerSendJob.NetworkDriver.m_PendingBeginSend. You are trying to schedule a new job ServerNetworkConnection:ServerReceiveJob, which writes to the same Unity.Collections.NativeArray`1[System.Int32] (via ServerReceiveJob.NetworkDriver.m_PendingBeginSend). To guarantee safety, you must include ServerNetworkConnection:ServerSendJob as a dependency of the newly scheduled job.

I understand what the error is asking out of me, but what I am wondering is: Is there truly no way to have one parallel job sending messages and another parallel job reading messages from the same NetworkDriver?

Or is it just a waste of time and I am better off combining both jobs into one parallel job that both sends & receive for each peers?

Thanks a lot for the help!